Khalid Shaikh Mohammed was behind many of the most heinous terrorist plots of the past twenty years, including the 1993 World Trade Center bombing, the Millennium Plots, and 9/11 itself. He has claimed to have personally beheaded Wall Street Journal reporter Daniel Pearl—which a recent study group at Georgetown University has concluded is most likely true. Today, Mohammed is at Guantanamo Bay and not talking. Investigative journalist Richard Miniter brings to life his remarkable true story, including his time living among us in the United States. Based on interviews with government officials, generals, diplomats and spies from around the world, Miniter reveals never-before-reported Al Qaeda plots and remarkable new details about the 9/11 attacks. He also lets us into the ultimately successful clandestine operations of American and Pakistani intelligence officers to capture this notorious killer.